When Sage users attempt to Install and Uninstall Sage 50 accounts but “Installation or Uninstall not completed”. Error received ‘The Windows Installer Service could not be accessed’.
Some Sage installation & Un-installation error
Error 1603 || 1605 || 1618 || 1628 || 1701 || 1704 || 1721 || 1722 || 1723
Steps to Fix Sage Install Error:
Solution I: Start Window installer service
First, Click on Start button >> Window+R
Next, type Services.msc
Now, Double click on Windows Installer option
Then, Set the Startup type to Manual
Click on Start >> start the service
Final, Click on OK.
Solution II: Backup Registry
Start Windows >> Open Run
Type regedit in the box >> OK
Highlight My Computer
Choose those file to export
Choose the location to save backup registry
Solution III:
Press Windows+R keys
Now, type CMD >> click on OK
Type SFC /Scannow
Reboot your system >> Install Sage 50